A popular saying that supposedly originates from an April Fools prank that the staff at DeviantArt.com played on their members. The prank consists of temporarily switching the avatar of every site member with a sprite animation of a the pokemon mudkip saying (in purposely misspelled text) "so i herd u liek mudkips"
It is often quoted and parodied for humorous purposes.
Unfortunately due to complaining DeviantArt staff haven't used this prank lately.
"So i herd you liek mudkips?"
"Heck no give me my avatar back."